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Another fault code... help please Loren

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Just got this off the car via Durametrics. Cleared it and drove the car and fault has not (yet) come back. The codes tend to come back every couple of hundred kms and do not come back immediately...

Clarification as to what the codes are trying to tell me please Loren... in particular the P0492 as I think this is a new code whilst the others have become regular over a couple hundred kms of driving.


Camshaft adjustment bank 1


Porsche fault code 208- secondary-air system bank 2


Porsche fault code 40- Cat converter efficiency bank 1


Porsche fault code 45- Cat converter efficiency bank 2

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P0420 40 TWC conversion, bank 1 - above limit

Possible causes:

- Oxygen sensor ahead of and after TWC exchanged

- Valve lift fault

- Aged oxygen sensor after TWC

- TWC faulty

P0430 TWC Conversion, Bank 2 - Above Limit

Possible causes:

- Oxygen sensor ahead of and after TWC exchanged

- Valve lift fault

- Aged oxygen sensor after TWC

- TWC faulty

P0492Secondary Air Injection System, Bank 2 - Insufficient Flow

Possible causes:

- Electrical fault in power supply or line between relay and secondary air injection pump

- Secondary air injection pump relay mechanically faulty

- Mechanical fault in electrical secondary air valve

- Pneumatic secondary air valve faulty/sluggish

- Electrical fault in secondary air injection pump

- Mechanical fault in secondary air injection pump or secondary air injection pump blocked

- Vacuum system leaking

- Air hose to secondary air injection pump slipped off or constricted

P1349 Camshaft Adjustment, Bank 1 – Below Limit

Possible causes:

- Dirt in system

- Solenoid hydraulic valve mechanically blocked

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